Sewing machine oil reservoir



Nov, 3,-1942. l.. c. MARsAc SEWING MACHINE OIL RESERVOIR Filed July 16,1941 3 Sheets-Sheet 1 Silvan/.m

Nov. 3, 1942. c. MARsAc 2,300,583

SEWING MACHNE OIL RESERVOIR Fi1ed Ju1y 16, 1941 s sheetsfsheet 2 L. C.MARSAC SEWING MACHINE OIL RESERVOIR Nov. 3,'. 1942.,

Filed July 16, 1941 3 Sl'xeeets--Sheet 3 www Patented Nov. 3, 1942 TENTF SEWING- MACHINE 0m RESERVOIR Leonard C. Marsac, Cranford, N. li.,assignor to The Singer Manufacturing Gompany, Elizabeth, N. J., acorporation o New Jersey Application July 1 6, 1941, Seriali No. 402,647

2 Claims.

'I'his invention relates to sewing machines and more particularly tothat type of sewing machine which is supported within an opening in atabletop and has a separable oil-containing reservoir associatedtherewith.

The invention -has for its primary object the provision of improvedmanually operable means for securing the sewing machine andoil-reservoir together so that they may be readily transported as a unitto and from the table top.

With the above and other objects in view, as will hereinafter appear,the invention comprises the devices, combinations and arrangements ofparts hereinafter set forth and illustrated in the accompanying drawingsof a preferred embodiment of the invention and the advantages attainedthereby will be readily understood by those skilled in the art.

In the drawings- Fig. 1 is a side elevation partly in section andshowing the machine and oil .reservoir locked to gether as a unit.

Fig. 2 is a vertical section taken substantially along line 22 of Fig. 1and illustrating the machine and oil reservoir in operative positionswith the locking element retracted from the machine frame.

Fig. 3 is a top plan View of the oil reservoir.

Fig. 4 is a side elevation, partly in section of the locking element.

Fig. 5 is a vertical section through one of the supporting inserts and acorner of the oil reservoir.

As shown in the drawings 8 represents the machine bed which supports thebracket arm terminating in the hollow head I0. Journaled in the head I0is the usual reciprocatoryneedle-bar II and the presser-bar I2, theformer element carrying the needle I3 and the latter element carryingthe presser-foot Itfwhich cooperates with the usual feed-dog I5. Aloop-taker actuating shaft IB is journaled lengthwise of the machine bed8 and carries a loop-taker element Il on the end thereof.

A more detailed description of thefeeding and stitch-forming mechanismof the machine may be found in Patent No. 2,206,285 to R. Kaier, datedJuly 2, 1940.

A pan-shaped oil reservoir I 8 is supported within an opening I 9 in thetable-top 23 by means of the four laterally extending ears 2| formed onthe reservoir I8 and engaging four shoulder portions 22 formed in thecorners of the opening I9. Carried within the groove 23 of the reservoirI8 terial 2t upon which the depending side and end walls 25 of themachine rest. The machine while in operative position as illustrated inFig, 2I rests, entirely by force of gravity, upon the gasket 2t.

A pair of floating hinge devices, only one set of which is illustratedherein, are provided on the present outt to permit the machine to beswung backwardly to thus expose the reservoir I8. Each hinge setcomprises a pin member 6, imbedded in the table top 20 and a fork memberl secured in the machine bed 8. The machine is adapted to pivotbackwardly about said pins 6. When the machine is in its operativeposition, as illustrated in Fig. 2, the fork members 'I are disposedslightly above and out of contact with the pins 6. The machine, while inoperation, rests entirely upon the gasket 2li and has no connection withthe table top 20. As illustrated in Figl the machine bed ii and the oilreservoir I0 form a substantially enclosed and oil-tight chamber.

The oil reservoir I8 is preferably die cast and is formed with anupturned edge 2S extending thereabout and an oil-containing sump portion2 located in one end thereof. Mechanism is provided, but not hereindisclosed, which extends into the sump 2l for the purpose oidistributing the oil from the sump throughout the machine. Thismechanism is disclosed in Patent No. 2,206,285, to Kaier, dated July 2,1940.

The above mentioned ears ZI extend laterally from and are an integralpart of the steel insert members 2B, which, in the present case, areanehored in the die cast reservoir I8 as a portion of the reservoir iscast thereabout, as at points lli.

Formed in the bottom portion of the reservoir id isa boss 29 the topedge 3U of which extends above the normal oil level of the reservoir I0as indicated by the raised indicia 3i formed in the wall of thereservoir I8. The boss 29 is provided with a vertically disposedaperture 32 which is adapted to slidingly receive the shank or rodportion 33 of a locking element.

This locking element comprises a shank por tion 33 one end of which isprovided with threads 35 and the other end of which has a knurled heador ,linger portion 36. The threaded portion or locking means 35 of theshank 33 is adapted to be received by the tapped portion 3l of the bossor lug 38 formed on the machine bed S and the operator need only turn,by hand, the head 36 a few times to eilect the engagement. Fig. l showsthe reservoir I8 locked to the machine bed 8 by means of the lockingelement is a gasket of vibration and sound-absorbing maand the lug 38.The Shoulder 39 is Provided 0n the bottom of the vboss 29 for thepurpose of forming a stop against Vwhich the knurled head 86 may betightened to thus force the reservoir I8 iirmly against the side andend`walls 25 of the machine.

When the threaded portion 35 of the locking element is disengaged fromthe machine lug. or cooperating locking member 38, it drops downwardlyunder force of gravity so that the thimbleshaped oil-seal 40 engages theboss 28 and covers the aperture 32 to prevent any oil from beingsplashed out of the reservoir I8. Fig. 2 best illustrates the lockingelement in its retracted position. The oil-seal 40 is brazed orotherwise secured directly to the shank 33.

From the above description it will be apparent that the lockingelementis adapted to be disengaged from the machine lug 38 during the operationof the machine so that there will be no metallic engagement between themachine and the oil pan I8. 'It may also be understood from both thedrawings and the above description that the present improved lockingmeans permits the machine and the oil pan I8 t'o be readily set into andremoved from the table top opening I9 as a unit.

Having set forth the nature of the invention what I claim herein is: v

1. In a'sewing machine having a bed with depending side and end Walls,an'd an oil-pan having upturned edges and forming with said bed anenclosed oil-containing chamber; the improvement which consists in theprovision of .locking means for securing said sewing machine and oil-pantogether, 'said means comprising a vertically apertured boss formed inthe lower portion of said pan, the top portion of said -bossextendingabove the level of oil contained in .said pan, a threaded andvertically shiftable rod supported in said boss, a tapped lug providedon said sewing machine bed and being adapted to receive said rod, andoil-sealing means in the form of a thimble-shaped element supported onsaid rod and being in cooperative relation with the top portion of theboss for the purpose of preventing the escape ot oil through saidapertured boss. V

2. In a sewing machine having -a bed with depending side and end wallsand being provided with a threaded aperture in its underside, an oil-panhaving upturned edges and forming with said bed an enclosedoil-containing chamber, and a vertically apertured boss formedin thelower portion of said oil-pan and within said chamber, the topy portionof said boss extending above the level of oil contained therein; theimprovement which consists in the provision of locking means forsecuring said sewing machine and oil-pan together, said means comprisinga vertically shiftable rod supported in said apertured boss and having alocking position and a retracted position, said rod being threaded atits upper end and carrying a inger-piece at its lower end at a pointbeneath said pan, and an oil-seal in the form of a thimbIe-shapedelement secured to said rod at a point beneath the threaded portionthereof, said oil-seal surrounding and engaging the upper portion ofsaid apertured boss when said rod is in its retracted position, saidthreaded portion of the rod being in engagement with said threadedaperture when said rod is in its locking position.

LEONARD C. MARSAC.

